1 Corinthians 11:28-32

That is why you should examine yourself before eating the bread and drinking the cup. For if you eat the bread or drink the cup without honoring the body of Christ, you are eating and drinking God’s judgment upon yourself. That is why many of you are weak and sick and some have even died. But if we would examine ourselves, we would not be judged by God in this way. Yet when we are judged by the Lord, we are being disciplined so that we will not be condemned along with the world.